CN216984233U

CN216984233U - Double-joint elastic device of chair

Info

Publication number: CN216984233U
Application number: CN202220259703.6U
Authority: CN
Inventors: 应国民
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-07-19
Anticipated expiration: 2032-01-25

Abstract

A double-joint elastic device of a chair comprises a tappet rod, a pipe sleeve, a rocker arm and a backrest stop on the chair, wherein the upper part of the rocker arm is connected with the pipe sleeve, the lower part of the rocker arm is connected with the backrest stop, the pipe sleeve is provided with a handle and an upper outer joint, the upper outer joint is connected with an upper inner joint on the rocker arm, the rocker arm is also provided with a baffle plate, a gear switch and a lower inner joint, the lower inner joint is connected with a lower outer joint on the backrest stop, the upper part of the pipe sleeve is provided with a bent handle, the middle part of the pipe sleeve is provided with a connecting arm, the connecting arm is connected with the rocker arm, a gear column is arranged between the two upper inner joints of the connecting arm, the gear column is provided with two large torsion springs, four spring feet on the two large torsion springs are respectively connected with the pipe sleeve and the rocker arm, a connecting rod is arranged in the pipe sleeve, the middle of the connecting rod is provided with a notch, the notch is connected with the gear switch, the other outer joint is arranged on the backrest stop, a lower hollow frame is arranged between the two lower outer joints, the lower inner joint of the rocker arm is provided with an empty frame, the empty frame is provided with a small torsion spring, and the lower inner joint is connected with the lower outer joint.

Description

Double-joint elastic device of chair

Technical Field

The utility model relates to an accessory on a household article, in particular to a backrest double-joint elastic device suitable for being installed on a chair.

Background

With the development of society, economy is flourishing, the living standard is improved, people's comfort level requirement to the seat is also higher and higher, and the back on the chair is some hardwood or metal structures, and the hard back can feel uncomfortable after a long time, so people can use soft material to cushion the back, and the sponge back chair is one of them, but the sponge back is not suitable in the hot summer.

Disclosure of Invention

In order to overcome the defects of the problems, the utility model provides a double-joint elastic device of a chair, wherein two ends of a rocker arm are provided with elastic joint backrests, the upper joint increases the elasticity of the backrest, and the lower joint ensures that the inclination of the backrest is consistent with that of a human body, so that the back and the upper part and the lower part of the backrest of a person can be firmly leaned to feel comfortable in any sitting posture, and the double-joint elastic device has the characteristics of convenience in use, adjustable elasticity and long service life.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a double-joint resilient means of chair, includes tappet, pipe box, rocking arm and back shelves on the chair, and the tappet links to each other with the cushion on the chair, and back shelves link to each other with the back on the chair, and rocking arm upper portion links to each other with the pipe box, and the rocking arm lower part links to each other with back shelves, is equipped with handle and last outer joint on the pipe box, goes up outer joint and links to each other with last inner joint on the rocking arm, still is equipped with baffle, gear switch and lower inner joint on the rocking arm, and lower inner joint links to each other with the lower outer joint on the back shelves.

The upper portion of the pipe sleeve is provided with a bent handle, the lower portion of the pipe sleeve is provided with a pipe hole and a screw hole, a guide groove is formed in the pipe hole, a connecting arm is arranged in the middle of the pipe sleeve and provided with two upper outer joints and the screw hole, an arc-shaped connecting plate and the screw hole are arranged on the two upper outer joints, an upper hollow frame is arranged between the two upper outer joints, the rear portion of the upper hollow frame is provided with a concave frame and two baffle grooves, a fixing column is arranged on the front portion of the concave frame, inserting grooves are formed in the edges of the fixing column and the concave frame, and the upper hollow frame is connected with an upper inner joint of the rocker arm.

The upper part of the rocker arm is provided with two upper inner joints and screw holes, the lower part of the rocker arm is provided with a lower inner joint and a stop head, the two upper inner joints are respectively connected with two clamping plates, a gear column is arranged between the two upper inner joints, the two clamping plates are both provided with a shaft groove and a baffle, a connecting rod is arranged in the two clamping plates, the connecting rod is provided with two clamping edges and a bottom plate, a gap is arranged in the middle of one of the two clamping edges, the upper parts of the two clamping edges are both provided with round holes, the lower parts of the two clamping edges are both provided with elliptical holes, both the elliptical holes are provided with elliptical sleeves, a rotating shaft is arranged in the elliptical sleeves, the rotating shaft is connected with a pressing block, the rotating shaft is arranged in the shaft groove and fixed by screws, a pressing groove on the pressing block is arranged on the rotating shaft and fixed by screws, the upper inner joints are arranged in an upper hollow frame, the upper inner joints, the upper outer joints and the gear column are connected and fixed by screws, the gear column is provided with two large torsion springs and the screw holes, two spring feet on the two large torsion springs are respectively connected with a pipe sleeve, the other two spring feet are connected with the rocker arm, the upper part of the connecting rod is arranged in the slot of the pipe sleeve, the round hole on the connecting rod is connected and fixed with the screw hole on the connecting arm by a screw, the baffle plate is arranged in the baffle slot, the fixing column is provided with a screw hole, and the fixing column is connected with the fixing plate and fixed by a screw.

A gear switch is arranged on one of the two clamping plates and consists of a large circle, a small circle and a switch cover, two lower stop bars and an inclined circle are arranged outside the small circle, the high end and the low end of the inclined circle are respectively connected with the two lower stop bars, screw holes are formed in the two lower stop bars, a pressure spring is arranged in the small circle, a pressing ring is arranged on the upper portion of the small circle, screw holes are formed in two ends of the pressing ring, the small circle is connected with the pressing ring and fixed through screws, a movable shaft is arranged in a circular hole in the bottom of the small circle, a small cylinder, a large cylinder and a check ring are arranged on the movable shaft, an elliptical convex body is arranged on the large cylinder, the elliptical convex body is provided with the screw holes and arranged in the pressure spring, the pressure spring is connected with the check ring, the other end of the small circle is connected with the pressing ring, and a column head of the small circle is arranged in a gap of the connecting rod; two upper stopping strips and an elliptical concave body are arranged in the switch cover, the two upper stopping strips are arranged on the inclined ring, and the elliptical concave body is connected with the elliptical convex body and fixed by screws.

The backrest is characterized in that lower outer joints are arranged on two sides of the backrest stopper, a lower hollow frame and a screw hole are arranged between the two lower outer joints, a pressing block and the hollow frame are arranged on the lower inner joint of the rocker arm, a small torsion spring is arranged on the hollow frame, two spring feet of the small torsion spring are respectively connected with the rocker arm and the backrest stopper, the lower inner joint and the stopper are arranged in the lower hollow frame, the lower inner joint is connected with the lower outer joint, the lower inner joint, the lower outer joint and the small torsion spring are fixed through screws, and the pressing block is arranged on the stopper and fixed through screws.

The bent handle arranged on the pipe sleeve is convenient for people to push and pull the chair.

The utility model has the beneficial effects that: the double-joint elastic device of the chair is characterized in that elastic joint backrests are arranged at two ends of a rocker arm, the upper joint increases the elasticity of the backrest, and the lower joint ensures that the inclination of the backrest is consistent with that of a human body, so that the back and the backrest of people can be firmly leaned up and down to feel comfortable in any sitting posture, and the double-joint elastic device has the characteristics of convenience in use, adjustable elasticity and long service life.

Drawings

The utility model is further illustrated by the following examples in conjunction with the drawings.

Fig. 1 is a schematic diagram of the structural principle of the present invention.

Fig. 2 is a schematic view of the construction of the pipe sleeve of the present invention.

Fig. 3 is a schematic view of the structure of the connecting rod of the present invention.

Fig. 4 is a schematic view showing a structure in which a rocker arm and a link are combined in the present invention.

FIG. 5 is a schematic view of the combination structure of the gear column and the large torsion spring according to the present invention.

FIG. 6 is a schematic view of the structure of the briquette of the present invention.

Fig. 7 is a schematic structural view of a movable shaft in the present invention.

Fig. 8 is a schematic structural view of the pressing ring of the present invention.

Fig. 9 is a schematic view of the structure of the opening and closing cover in the present invention.

Fig. 10 is a schematic structural view of the combination of the lower outer joint, the lower inner joint and the backrest stop of the present invention.

Fig. 11 is a schematic structural view of the pressing body of the present invention.

In the figure, 1, a handle, 2, an upper outer joint, 3, an upper inner joint, 4, a rocker arm, 5, a lower outer joint, 6, a backrest stop, 7, a lower inner joint, 8, a gear switch, 9, a tappet, 10, a baffle, 11, a pipe sleeve, 12, a fixed column, 13, a connecting plate, 14, an upper cavity, 15, a stop groove, 16, an inserting groove, 17, a concave frame, 18, a guide groove, 19, a connecting arm, 20, a clamping plate, 21, a small circle, 22, a pressing ring, 23, a lower stop bar, 24, a pressure spring, 25, a slant ring, 26, a shaft groove, 27, a stop head, 28, a pressing block, 29, a clamping edge, 30, a connecting rod, 31, a circular sleeve, 32, a circular hole, 33, a bottom plate, 34, a large torsion spring, 35, an elliptical sleeve, 36, an elliptical hole, 37, a notch, 38, a screw hole, 39, a gear column, 40, a pressing groove, 41, an elliptical convex body, 42, a movable shaft, 43, a retaining ring, 44, a small column, 45, a large column, 46. the upper stop bar, 47, the oval concave body, 48, the switch cover, 49, the small torsion spring, 50, the pressing body and 51, the hollow frame.

Detailed Description

In fig. 1, a double-joint elastic device of a chair comprises a tappet 9, a pipe sleeve 11, a rocker arm 4 and a backrest stop 6 on the chair, wherein the upper part of the rocker arm 4 is connected with the pipe sleeve 11, the lower part of the rocker arm is connected with the backrest stop 6, the pipe sleeve is provided with a handle 1 and an upper outer joint 2, the upper outer joint 2 is connected with an upper inner joint 3 on the rocker arm, the rocker arm is further provided with a baffle plate 10, a gear switch 8 and a lower inner joint 7, and the lower inner joint is connected with a lower outer joint 5 on the backrest stop.

In fig. 2, a bent handle 1 is pressed on the upper part of a pipe sleeve 11, pipe holes and screw holes are pressed on the lower part of the pipe sleeve, a guide groove 18 is pressed in the pipe holes, a connecting arm 19 is connected with the middle part of the pipe sleeve, two upper outer joints 2 and screw holes are connected with the connecting arm 19, arc-shaped connecting plates 13 and screw holes are connected with the two upper outer joints, an upper hollow frame 14 is pressed between the two upper outer joints, a concave frame 17 and two shift grooves 15 are pressed on the rear part of the upper hollow frame 14, a fixed column 12 is connected with the front part of the concave frame, a slot 16 is pressed on the fixed column 12 and the edge of the concave frame, and the upper hollow frame is connected with an upper inner joint 3 of a rocker arm.

In the figures 3-7, the upper part of the rocker arm 4 is connected with two upper inner joints 3 and pressed with screw holes, the lower part of the rocker arm is connected with a lower inner joint 7 and a stop 27, the two upper inner joints are respectively connected with two clamping plates 20, a gear column 39 is arranged between the two upper inner joints, a shaft groove 26 and a baffle 10 are arranged on the two clamping plates 20, a connecting rod 30 is arranged in the two clamping plates, the connecting rod 30 is connected with two clamping edges 29 and a bottom plate 33, a gap 37 is arranged in the middle of one clamping edge, round holes 32 are arranged on the upper parts of the two clamping edges, oval holes 36 are arranged on the lower parts of the two clamping edges, round sleeves 31 are arranged on the two round holes, oval sleeves 35 are arranged on the oval sleeves 35, rotating shafts are arranged in the oval sleeves 35, the rotating shafts are connected with pressing blocks 28, the rotating shafts are arranged in the shaft grooves and fixed by screws, pressing grooves 40 on the pressing blocks 28 are arranged on the rotating shafts and fixed by screws, the upper inner joints are arranged in the upper hollow frames, the upper inner joints, the lower joints are connected with screw blocks, The upper outer joint and the gear post 39 are connected and fixed by screws, two large torsion springs 34 are mounted on the gear post and pressed with screw holes 38, two spring feet on the two large torsion springs are respectively connected with the pipe sleeve, the other two spring feet are connected with the rocker arm, the upper part of the connecting rod 30 is mounted in a slot of the pipe sleeve, a round hole on the connecting rod is connected and fixed with the screw hole on the connecting arm by screws, the baffle plate is inserted into the blocking slot, a screw hole is pressed on the fixing column, and the fixing column is connected with the fixing plate and fixed by screws; a gear switch is arranged on one of the two clamping plates and consists of a large circle, a small circle 21 and a switch cover, two lower stop strips 23 and a ring 25 are pressed outside the small circle 21, the high end and the low end of the ring are respectively connected with the two lower stop strips, screw holes are pressed on the two lower stop strips 23, a pressure spring 24 is arranged in the small circle, a pressing ring 22 is arranged on the upper portion of the small circle, screw holes are pressed at two ends of the pressing ring 22, the small circle is connected with the pressing ring and fixed by screws, a movable shaft 42 is arranged in a circular hole at the bottom of the small circle, the movable shaft 42 is connected with a small cylinder 44, a large cylinder 45 and a retaining ring 43, an elliptical convex body 41 is pressed on the large cylinder 45, the screw holes are pressed on the elliptical convex body and arranged in the pressure spring, one end of the pressure spring is connected with the retaining ring, the other end of the pressure spring is connected with the pressing ring, and the head of the small circle is arranged in a gap of the connecting rod.

In fig. 8, screw holes are pressed at both ends of the pressing ring 22.

In fig. 9, two upper stopping strips 46 and an elliptical concave body 47 are pressed in the switch cover 48, the two upper stopping strips 46 are placed on the inclined ring, and the elliptical concave body is connected with the elliptical convex body and fixed by screws.

In fig. 10 and 11, the outer joints 5 are pressed down on both sides of the backrest stop 6, a lower hollow frame and a screw hole are pressed between the two lower outer joints 5, a press block 28 and a hollow frame 51 are pressed on the lower inner joint 7 of the rocker arm 4, a small torsion spring 49 is mounted on the hollow frame 51, two spring feet of the small torsion spring are respectively connected with the rocker arm and the backrest stop, the lower inner joint and the stop head are mounted in the lower hollow frame, the lower inner joint is connected with the lower outer joint, the lower inner joint, the lower outer joint and the small torsion spring are fixed by screws, and a press body 50 is mounted on the stop head and fixed by screws.

When people sit on the chair, the backrest can elastically incline along with the back of people, the elasticity of the backrest can adjust the elastic strength according to the needs of people, only the gear switch is rotated to enable the upper blocking strip to slide at the high end of the inclined ring, the movable shaft is separated from the notch on the connecting rod, the elliptical hole on the connecting rod slides back and forth on the rotating shaft, and the elasticity of the backrest blocking front and back is enhanced; the upper stop bar slides at the lower end of the inclined ring by rotating the gear switch, the movable shaft enters a notch on the connecting rod, the elliptical hole on the connecting rod is prevented from sliding back and forth on the rotating shaft, and the front and back elasticity of the backrest stop is shortened.

The above description is only an example of the present invention and is not intended to limit the scope of the present invention, and all modifications of equivalent structures or equivalent processes and other related fields of technology that can be directly or indirectly implemented by using the contents of the specification, claims and drawings of the present invention are included in the scope of the present invention.

Claims

1. The utility model provides a double-joint resilient means of chair, includes pipe box, the back shelves on rocking arm and the chair on the chair tappet, the tappet links to each other with the cushion on the chair, and the back shelves links to each other characterized by with the back on the chair: the upper part of the rocker arm is connected with a pipe sleeve, the lower part of the rocker arm is connected with a backrest stop, the pipe sleeve is provided with a handle and an upper outer joint, the upper outer joint is connected with an upper inner joint on the rocker arm, the rocker arm is also provided with a baffle plate, a gear switch and a lower inner joint, the lower inner joint is connected with a lower outer joint on the backrest stop, the upper part of the pipe sleeve is provided with a bent handle, the lower part of the pipe sleeve is provided with a pipe hole, a guide groove is arranged in the pipe hole, the middle part of the pipe sleeve is provided with a connecting arm, the connecting arm is provided with two upper outer joints, the two upper outer joints are provided with an arc-shaped connecting plate, an upper hollow frame is arranged between the two upper outer joints, the rear part of the upper hollow frame is provided with a concave frame and two stop grooves, the front part of the concave frame is provided with a fixing column, the fixing column and the concave frame are provided with inserting grooves, the upper hollow frame is connected with the upper inner joint of the rocker arm, the upper part of the rocker arm is provided with two upper inner joints, the lower inner joint and the stop head are respectively connected with the two clamping plates, a gear post is arranged between the two upper inner joints, the two clamp plates are both provided with a shaft groove and a baffle plate, a connecting rod is arranged in the two clamp plates, the connecting rod is provided with two clamping edges and a bottom plate, a gap is arranged in the middle of one clamping edge, the upper parts of the two clamping edges are both provided with round holes, the lower parts of the two clamping edges are both provided with round sleeves, the round holes are both provided with oval sleeves, the oval sleeves are provided with rotating shafts, the rotating shafts are connected with pressing blocks, the rotating shafts are arranged in the shaft grooves, pressing grooves on the pressing blocks are arranged on the rotating shafts, the upper inner joints are arranged in an upper hollow frame, the gear post is provided with two large torsional springs and screw holes, the upper parts of the connecting rods are arranged in inserting grooves of the pipe sleeves, the round holes on the connecting rod are connected with the screw holes on the connecting arms, the baffle plate is arranged in the baffle grooves, the fixing columns are provided with screw holes, the fixing columns are connected with a fixed plate, one of the two clamp plates is provided with a gear switch, and the gear switch is composed of a large circle, a small circle and a switch cover, the small circle is externally provided with two lower stop bars and a bevel ring, the high end and the low end of the bevel ring are respectively connected with the two lower stop bars, a pressure spring is arranged in the small circle, the upper part of the small circle is provided with a pressing ring, the small circle is connected with the pressing ring, a movable shaft is arranged in a round hole at the bottom of the small circle, a small cylinder, a large cylinder and a check ring are arranged on the movable shaft, an elliptical convex body is arranged on the large cylinder, a screw hole is arranged on the elliptical convex body and arranged in the pressure spring, one end of the pressure spring is connected with the check ring, the other end of the pressure spring is connected with the pressing ring, and the head of the small circle is arranged in a gap of the connecting rod; two upper stopping strips and an elliptical concave body are arranged in the switch cover, the two upper stopping strips are arranged on the inclined ring, the elliptical concave body is connected with the elliptical convex body, lower outer joints are arranged on two sides of the backrest, a lower hollow frame is arranged between the two lower outer joints, a pressing block and a hollow frame are arranged on a lower inner joint of the rocker arm, a small torsion spring is arranged on the hollow frame, the lower inner joint and a stopping head are arranged in the lower hollow frame, the lower inner joint is connected with the lower outer joint, the lower inner joint, the lower outer joint and the small torsion spring are fixed through screws, and a pressing body is arranged on the stopping head.

2. The bi-articular elastic means of a chair according to claim 1, characterized in that: two of the two large torsion springs are respectively connected with the pipe sleeve, and the other two spring feet are connected with the rocker arm.

3. The bi-articular elastic means of a chair according to claim 1, characterized in that: and two spring feet of the small torsion spring are respectively connected with the rocker arm and the backrest stop.